PCBA (Printed Circuit Board Assembly) fixing device capable of preventing stress displacement

Abstract

The utility model discloses a PCBA (Printed Circuit Board Assembly) fixing device capable of preventing stress displacement, which comprises a plate table, an assembly groove is formed on the surface of the plate table, a template is arranged at the notch of the assembly groove, and a plurality of notches are arranged on the template in a penetrating manner; a plurality of electric cylinders are arranged on the plate table, a cover plate is jointly installed on cylinder rods of the electric cylinders, and a plurality of windows are formed in the cover plate in a penetrating mode; and a plurality of supporting frames are arranged at the bottom of the template, the supporting frames are all located under the notches, supporting plates are arranged on the supporting frames, and the supporting plates are arranged in the middles of the notches. According to the utility model, the template and the cover plate which are matched with the printed circuit board are arranged, the cover plate is utilized to press the printed circuit board on the template, the cover plate and the template are respectively provided with a matched single circuit module so that the milling cutter can conveniently cut the window and the notch, and the supporting plate is arranged in the notch. Therefore, the printed circuit board is comprehensively fixed, and a single circuit module is cut and supported, so that the printed circuit board is difficult to shift.

Description

Technical Field

[0001] The utility model relates to the field of printed circuit board manufacturing, in particular to a PCBA fixing device capable of preventing displacement due to force. Background Art

[0002] The cutting accuracy of PCBA greatly affects the appearance accuracy and assembly yield of the printed circuit board. In order to improve the cutting accuracy of the printed circuit board, the stability of the printed circuit board during cutting is one of the main factors. Usually, a fixing device is set to prevent displacement due to force to limit the deviation of the printed circuit board.

[0003] Conventional PCBA fixing devices that prevent force displacement usually adopt a four-corner or four-side fixing method, that is, the corners of the printed circuit board are clamped and fixed. However, the printed circuit board sheet has a certain toughness and will vibrate during the cutting process. The vibrating printed circuit board is prone to friction with the clamping mechanism and displacement, resulting in displacement of the printed circuit board.

[0004] In addition, there will be multiple circuit modules with the same or different functions printed on the printed circuit board. When the cutting of a single circuit module of the printed circuit board is about to be completed, the circuit module is only partially connected to the board of the printed circuit board. Vibration can easily cause the single circuit module to vibrate too much due to the lack of support at the bottom, which can cause the single circuit module to shift easily at the end of the cutting knife, resulting in reduced accuracy.

[0005] Therefore, the existing fixing device for preventing the PCBA from shifting when subjected to force is difficult to fully and stably fix the printed circuit board, especially lacks the fixation of a single circuit module during processing. Utility Model Content

[0006] The utility model aims to provide a PCBA fixing device that prevents displacement due to force, so as to solve the technical problems in the prior art that it is difficult to fix the printed circuit board comprehensively and stably, and the lack of fixation of a single circuit module easily leads to increased cutting errors.

[0007] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:

[0008] A PCBA fixing device for preventing displacement under force, comprising a platen, a mounting groove formed on the surface of the platen, a template for supporting a printed circuit board detachably mounted at the notch of the mounting groove, and a plurality of notches matching the cutting route of the printed circuit board are provided through the template;

[0009] A plurality of electric cylinders are arranged on the platform, and a cover plate for pressing the printed circuit board is detachably mounted on the cylinder rods of the plurality of electric cylinders, and a plurality of windows matching the cutting area of ​​the printed circuit board are penetrated and arranged on the cover plate;

[0010] A plurality of support frames are arranged at the bottom of the template and are placed in the assembly grooves. The support frames are all located directly below the notches, and a support plate is arranged on the support frames. The support plate is centrally arranged in the notches, and the surface of the support plate is flush with the surface of the template;

[0011] After the plurality of electric cylinders drive the cover plate to press the printed circuit board onto the template, the support plate supports the bottom of the area to be cut of the printed circuit board.

[0012] As a preferred solution of the utility model, a supporting rubber pad is arranged on the surface of the template along the edge of the notch, a pressing rubber pad is arranged on the bottom of the cover plate along the edge of the window, and a rubber gasket is arranged on the surface of the support plate.

[0013] As a preferred solution of the utility model, a supporting rubber frame fixed along the edge is provided on the surface of the template, and a pressing rubber frame fixed along the edge is provided on the bottom of the cover plate.

[0014] As a preferred solution of the utility model, the supporting rubber pad, the supporting rubber frame and the rubber gasket are made of hard rubber material, and the pressing rubber pad and the pressing rubber frame are made of soft rubber material.

[0015] As a preferred solution of the utility model, a plurality of pins matching the positioning holes of the printed circuit board are arranged on the surface edge of the template and / or the surface of the support plate.

[0016] As a preferred solution of the utility model, a negative pressure chip removal pipe is provided at the bottom of the platen, and the negative pressure chip removal pipe is communicated with the assembly groove.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a template and a cover plate matched with the printed circuit board, uses the cover plate to press the printed circuit board onto the template, and respectively provides a matching single circuit module on the cover plate and the template to facilitate the milling cutter to cut the window and the notch, and provides a support plate in the notch, thereby achieving comprehensive fixation of the printed circuit board and cutting support for the single circuit module, making it difficult for the single circuit module to shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 A schematic structural diagram of a PCBA fixing device for preventing force displacement is provided for an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of the structure of a template portion of a PCBA fixing device that prevents force displacement is provided for an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the cover plate structure of a PCBA fixing device that prevents force displacement is provided for an embodiment of the utility model.

[0023] The numbers in the figure represent the following:

[0024] 1-Plate; 2-Template; 3-Cover; 4-Supporting frame; 5-Pin column;

[0025] 11-assembly groove; 12-electric cylinder; 13-negative pressure chip removal pipe; 21-notch; 22-support rubber pad; 23-support rubber frame; 31-window; 32-pressing rubber pad; 33-pressing rubber frame; 41-support plate; 42-rubber gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 As shown, the utility model provides a PCBA fixing device for preventing force displacement, including a plate 1, a mounting groove 11 is formed on the surface of the plate 1, a template 2 for supporting a printed circuit board is detachably installed at the notch of the mounting groove 11, and a plurality of notches 21 matching the cutting route of the printed circuit board are provided through the template 2;

[0028] A plurality of electric cylinders 12 are arranged on the platform 1, and a cover plate 3 for pressing the printed circuit board is detachably mounted on the cylinder rods of the plurality of electric cylinders 12, and a plurality of windows 31 matching the cutting area of ​​the printed circuit board are arranged through the cover plate 3;

[0029] A plurality of support frames 4 are arranged at the bottom of the template 2 and are placed in the assembly grooves 11. The support frames 4 are all located directly below the notches 21, and a support plate 41 is arranged on the support frames 4. The support plate 41 is centrally arranged in the notches 21, and the surface of the support plate 41 is flush with the surface of the template 2.

[0030] After the multiple electric cylinders 12 drive the cover plate 3 to press the printed circuit board onto the template 2, the support plate 41 supports the bottom of the area to be cut of the printed circuit board.

[0031] Conventional PCBA fixing devices that prevent force displacement usually adopt a four-corner or four-side fixing method, that is, the corners of the printed circuit board are clamped and fixed, but the printed circuit board has a certain toughness and will vibrate during the cutting process. The vibrating printed circuit board is prone to friction with the clamping mechanism and displacement, resulting in displacement of the printed circuit board. When the cutting of a single circuit module of the printed circuit board is about to be completed, there is only a partial connection at this time. The vibration can easily cause the single circuit module to vibrate too much and shift due to the lack of support at the bottom, resulting in reduced cutting accuracy.

[0032] The anti-force displacement device of this embodiment mainly utilizes the cover plate 3 to press the printed circuit board onto the template 2, so that the printed circuit board is difficult to shift during the cutting process, and a window 31 is provided on the cover plate 3 to facilitate the entry of the milling cutter for processing, and a notch 21 is provided on the template 2 to avoid affecting the work of the milling cutter, so that the milling cutter can completely penetrate the printed circuit board, and by providing a support plate 41, the cutting area of ​​the printed circuit board can be supported, thereby preventing the printed circuit board to be cut from vibrating too much during the cutting process of the milling cutter and causing displacement.

[0033] Compared with the existing PCBA fixing device that prevents force displacement, the printed circuit board hand-held displacement device of this embodiment can fully press the printed circuit board and only expose the relevant cutting area, so that the printed circuit board can be fixed over a large area, making it difficult for the printed circuit board to be disturbed by vibration; and, the support plate 41 is used to support the single circuit module in the cutting area, thereby avoiding large-scale vibration of the single circuit module, thereby ensuring precise cutting.

[0034] The areas of the notch 21 and the window 31 are both larger than the area of ​​the printed circuit board cutting area, and the area of ​​the support plate 41 is smaller than the area of ​​the printed circuit board cutting area, so that the notch 21 and the window 31 do not interfere with the operation of the milling cutter.

[0035] The template 2 and the cover plate 3 are both detachable structures. Therefore, the template 2 and the cover plate 3 can be replaced with corresponding specifications due to different specifications of the printed circuit boards to be processed, so as to match the printed circuit boards for cutting.

[0036] When the printed circuit board is fixed, the contact between the cover plate 3 and the template 2 and the printed circuit board is rigid contact, which is easy to crush or wear the insulating layer of the printed circuit board due to vibration during cutting. Therefore, in order to avoid this situation, the following preferred embodiments are provided.

[0037] like Figure 2 and Figure 3 As shown, a supporting rubber pad 22 is provided on the surface of the template 2 along the edge of the notch 21 , a pressing rubber pad 32 is provided on the bottom of the cover plate 3 along the edge of the window 31 , and a rubber gasket 42 is provided on the surface of the support plate 41 .

[0038] The supporting rubber pad 22 and the rubber pad 42 can support the printed circuit board, thereby preventing the printed circuit board from contacting the template 2, and preventing the template and the printed circuit board from rubbing against each other and being damaged by rigid extrusion.

[0039] The pressing rubber pad 32 can press the surface of the printed circuit board tightly, thereby preventing the printed circuit board from contacting the cover plate 3, and preventing the cover plate and the printed circuit board from rubbing against each other and being damaged by rigid extrusion.

[0040] Since the printed circuit board is not in contact with the template 2 and the cover plate 3 after being supported by the supporting rubber pad 22 and the rubber pad 42 and squeezed by the pressing rubber pad 32, the edge of the printed circuit board cannot be fixed, and the vibration generated by the cutting is easily transmitted to the edge of the printed circuit board, causing a larger vibration, increasing the risk of displacement of the printed circuit board. Therefore, the following preferred embodiments are further provided.

[0041] like Figure 2 and Figure 3 As shown, a supporting rubber frame 23 fixed along the edge is provided on the surface of the template 2 , and a pressing rubber frame 33 fixed along the edge is provided on the bottom of the cover plate 3 .

[0042] The supporting rubber frame 23 can support the edge of the printed circuit board, and the pressing rubber frame 33 can press the edge of the printed circuit board against the supporting rubber frame 23, thereby preventing the edge of the printed circuit board from vibrating significantly during the cutting process.

[0043] Furthermore, during the printed circuit board cutting process, the printed circuit board needs to be kept horizontal to avoid errors in the milling cutter cutting. Therefore, the following preferred embodiments are provided.

[0044] like Figure 2 and Figure 3 As shown, the supporting rubber pad 22 , the supporting rubber frame 23 and the rubber pad 42 are made of hard rubber material, and the pressing rubber pad 32 and the pressing rubber frame 33 are made of soft rubber material.

[0045] By making the supporting rubber pad 22, supporting rubber frame 23 and rubber pad 42 made of hard rubber material, the printed circuit board can be prevented from collapsing due to being pressed thereon, so that the printed circuit board can be fixed horizontally. The pressing rubber pad 32 and pressing rubber frame 33 are made of soft rubber material, which can provide a certain shock absorbing effect.

[0046] When the printed circuit board is mounted on the template 2, it needs to be mounted so that the individual circuit modules of the printed circuit board are aligned with the notches 21 of the module 2. Therefore, the following preferred embodiments are provided.

[0047] like Figure 2 As shown, a plurality of pins 5 matching the positioning holes of the printed circuit board are arranged on the surface edge of the template 2 and / or the surface of the support plate 41 .

[0048] By arranging the pins 5 on the module 2 and / or the support plate 41, the positioning holes on the printed circuit board can be sleeved on the pins 5, so that the printed circuit board can be accurately placed on the template 2 to improve the cutting accuracy.

[0049] During the cutting process of the printed circuit board, some of the debris generated by the cutting (the other part is absorbed by the dust removal device near the milling cutter) will fall into the assembly groove 11. The waste debris in the assembly groove 11 needs to be cleaned in time to avoid affecting the cutting work of the printed circuit board. Therefore, the following preferred embodiments are provided.

[0050] like Figure 1 As shown, a negative pressure chip removal pipe 13 is provided at the bottom of the pallet 1 , and the negative pressure chip removal pipe 13 is communicated with the assembly groove 11 .

[0051] The negative pressure chip removal pipe 13 is connected to the negative pressure dust removal device (existing technology) of the milling cutter through a hose line, so that the waste chips in the assembly groove 11 can be sucked out in time.

[0052] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A PCBA fixing device for preventing force displacement, characterized in that: The invention comprises a platform (1), wherein a mounting groove (11) is formed on the surface of the platform (1), a template (2) for supporting a printed circuit board is detachably mounted at the notch of the mounting groove (11), and a plurality of notches (21) matching the cutting route of the printed circuit board are provided through the template (2); A plurality of electric cylinders (12) are arranged on the platform (1), and a cover plate (3) for pressing a printed circuit board is detachably mounted on the cylinder rods of the plurality of electric cylinders (12), and a plurality of windows (31) matching the cutting area of ​​the printed circuit board are penetrated through the cover plate (3); A plurality of support frames (4) are arranged at the bottom of the template (2) and are placed in the assembly groove (11); the support frames (4) are all located directly below the notch (21); and a support plate (41) is arranged on the support frame (4); the support plate (41) is centrally arranged in the notch (21), and the surface of the support plate (41) is flush with the surface of the template (2); After the plurality of electric cylinders (12) drive the cover plate (3) to press the printed circuit board onto the template (2), the support plate (41) supports the bottom of the area to be cut of the printed circuit board.

2. A PCBA fixing device for preventing force displacement according to claim 1, characterized in that: A supporting rubber pad (22) is provided on the surface of the template (2) along the edge of the notch (21), a pressing rubber pad (32) is provided on the bottom of the cover plate (3) along the edge of the window (31), and a rubber gasket (42) is provided on the surface of the support plate (41).

3. A PCBA fixing device for preventing force displacement according to claim 2, characterized in that: A supporting rubber frame (23) fixed along the edge is arranged on the surface of the template (2), and a pressing rubber frame (33) fixed along the edge is arranged on the bottom of the cover plate (3).

4. A PCBA fixing device for preventing force displacement according to claim 3, characterized in that: The supporting rubber pad (22), the supporting rubber frame (23) and the rubber pad (42) are made of hard rubber material, and the pressing rubber pad (32) and the pressing rubber frame (33) are made of soft rubber material.

5. A PCBA fixing device for preventing force displacement according to any one of claims 1 to 3, characterized in that: A plurality of pins (5) matching the positioning holes of the printed circuit board are arranged on the surface edge of the template (2) and / or the surface of the support plate (41).

6. A PCBA fixing device for preventing force displacement according to claim 1, characterized in that: A negative pressure chip removal pipe (13) is provided at the bottom of the platen (1), and the negative pressure chip removal pipe (13) is in communication with the assembly groove (11).

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